Set in Delhi's Chandni Chowk, Jijaji Chhat Per Hain is an entertaining story of Elaichi, a quintessential girl next door, the head of the household and lehenga shop owner, Murari Bansal and their helpless tenant, Pancham.
The story revolves around Elaichi's mischief and eccentricities, Pancham's attempts to escape from her tricks and Murari's wish of getting his daughter to amend her notorious ways and settle down in life.
However, things take a funny turn, when Murari rents out his rooftop room/ 'barsati' to Pancham. Elaichi makes Pancham her new target of pranks as she falls head over heels in love with him at first sight, while Pancham being completely unaware of this ends up working with Murari trying to make ends meet and reach his goal of becoming a music director.
He moves to Delhi with his best friend, Pintoo. Since, Murari is principally determined to not rent his 'barsati' to bachelors, Pancham fakes being married and disguises Pintoo, as a woman posing as his wife.